Dental articulator.



T. H. MONTAGUE.

DENTAL ABTICULATOR.

APPLI'OATION FILED AUG. 1912.

1,045,586. l Patented Nov. 26, 1912.

cuLuMlxlA PLANOGRAPN C0.. WASHINGTON. EL \:4

THEODORE I-I. MONTAGUE, OF BLUE ISLAND, ILLINOIS.

DENTAL ARTICULATOR.

Specification of Letters Patent.

Patented Nov. 26, 1912.

Application filed August 8, 1912. Serial No. 714,014.

To all who/m, fit may concern:

Be it known that I, THEODORE I-I. MoN- TAGUE, a citizen of the UnitedStates, residing at Blue Island, in the county of Cook and State ofIllinois, have invented a new and useful Improvement in DentalArticulators, of which the following is a speciication.

My improved articulator was devised, more particularly, for use inuniting the superio-r and inferior maxillaries of orthodont-hia models,and I have, therefore, illustrated it in this connection in theaccompanying drawings, though I do not wish to be understood asintending to limit it to this particular use; my object being to providea simple, economical and improved construction of articulator of theseparable-hinge type.

Referring to the accompanying drawing, Figure 1 is a view in sideelevation of an orthodonthia model, the members of which, shown inclosed condition, are connected together by an articulator constructedin accordance with my invention. Fig. 2 is a similar view of thearticulator, the members thereof being shown in the position representedin Fig. 1. Fig. 3 is a plan view of the articulator in the positionillustrated in Fig. 2; and Fig. t, a perspective view of the members ofthe articulator in disassembled, but related, condition, this Viewshowing the relative positions of said members for telescoping one withthe other to unite them, or for disconnecting them one from the other asdesired.

My improved articulator comprises two hingedly-connected U-shapedmembers 5 and 6, the member 5 being of less length than the member 6 andformed with a longitudinally slit-sleeve section 7 surrounding thebar-portion 8 of the member 6 and forming therewith the hinge connectionbetween said members when they are telescoped with each other into thecondition represented in Fig. 3, as hereinafter described.

The arms 9 and 10 of the members 5 and 6, respectively, are deflected asrepresented at 11 and 12 and at their extremities are split, the splitportions 13 thus formed being bent apart between their ends asrepresented at 141 to thus cause the arms 9 and 10 to present yieldingand enlarged ends. In assembling the articulator with the members of amodel, as for example that illustrated at 15 and formed of the members16 and 17, holes represented at 18 are first drilled in said members andthe ends of the articulator members thereupon inserted into these holes,the latter being preferably of a diameter slightly greater than thediameter of the unsplit portions of the arms 9 and 10, whereby the splitport-ions 13 will contract, upon entering the holes 15 and thus serve tosecurely hold the parts of the articulator to the members of the modelby frictionally engaging with the walls of the holes 15.

It is desirable in manipulating the model that the members thereof bedisconnected and lunited at will, and to permit this to be accomplishedwithout disengaging the articulator sections from the members of themodel with which they are respectively connected, I provide theslit-sleeve section 7 hereinbefore referred to, and form a notch 19 inone of the arms 9 adjacent to the bar 8, which permits the members ofthe articulator to be disconnected by moving them lengthwise of eachother when the members of the model are swung apart sui'iiciently far tocause the slit portion of the sleeve 7 to register with the notch 19, itbeing understood that the members of the articulator may be assembled bytelescoping the sleeve 7 with the bar 8 by slipping the sleeve at tsslit end over the notched-portion of the It will be understood from theforegoing that by constructing an artioulator in accordance with myinvention, the members of the model may be opened and closed at will byswinging them on the hinge connection provided, wit-hout danger ofaccidental separation of the members of the articulator, and that, whendesired, the members of the articulator may be quickly disconnected forseparating the model members.

/Vhat I claim as new and desire to secure by Letters Patent is- 1. Adental articulator formed of a pair of U-shaped members, one of which isformed with a sleeve section slit longitudinally and arms secured to andextending at angles to said sleeve, said sleeve being adapted totelescope with the bar-portion of the other of said members and formtherewith a hinge, for the purpose set forth.

2. A dental articulator formed of a pair of hngedly-oonneoted membershaving enlarged and yeldable for the purpose set larged eont-raotbleend-portions, for the forth.

purpose set fort-h. THEODORE H. MONTAGUE.

3. A dent-a1 arteulator formed of a pair of hngedly-oonneeted membershaving split Vitnesses:

ends with the split-portions bentapart to HERMAN SEX-FORTH,

cause the ends of said members to be en- HARRY NORDEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

